Try N140 and RL17 with the 80g SMKs. I have a couple loads with them. I use one for PRS, and the other for F-Class.
.3-.4" with the RL17 loads (80g SMK) <-----More velocity, but groups aren't as tight.
.2-.3" with the N-140 loads (80g SMK) <-----Less velocity, but super tight groups...